Date   
QCX Displayed Frequency vs CW Offset #qcx #manual

Dan Pflugrath
 

Is the upper left displayed frequency  A)  during receive mode  the transmit frequency or B) is it the transmit frequency netted with the offset frequency in the receive mode.  I thought the displayed frequency should always be the transmit frequency as in A. The manual indicates the cw offset is automatically applied or netted as in B.

I have adjusted the audio filter to center on 600 Hz.  The VFO CW offset is set to 600 Hz and the Keyer CW tone offset frequency is set to 600 Hz.  The audio alignment frequencies were also set accordingly. 

Using the Reverse Beacon Network to verify my transmit frequency when I adjust the display to 14.050000 the transmitted signal is at 14.050600.  Is this correct and  what I should expect or do I have something wrong in the setup?  
Dan KA7GPP    

Re: Scanning feature for QCX

Paul AI4EE
 

Great idea, not likely to happen. The firmware is already "full up." If enough present features were removed, scanning might be possible, though I doubt many would support this. On the other hand, Hans is quite the wizard, so he might conceive of something.


On 12/17/2019 10:24 PM, George Korper wrote:
Being a relative newcomer to the group I would like to ask if anyone
has suggested adding a scanning feature to the QCX. If I could press a button and have
the QCX scan the band or a patch of the band as I listen, without having to turn the encoder,
I could hunt and pounce while I do other things around the shack, like build more QCX's. 
The scan feature would have a start, a stop, and automatic return, and use the three frequency speeds. 
20 is awful quiet and lightly populated where I live so just hearing other stations pop up would be a sign to listen around and operate.

Now I don't mind looking like a fool if this is possible already, and I am missing it in the manual.
 I think it would be a great sales feature for those of us who don't
want to use CAT or a computer. Hans makes the firmware and actually I think this would not
be to difficult to add to Other. Hans if your listening, what am I missing here?

Scanning feature for QCX

George Korper
 

Being a relative newcomer to the group I would like to ask if anyone
has suggested adding a scanning feature to the QCX. If I could press a button and have
the QCX scan the band or a patch of the band as I listen, without having to turn the encoder,
I could hunt and pounce while I do other things around the shack, like build more QCX's. 
The scan feature would have a start, a stop, and automatic return, and use the three frequency speeds. 
20 is awful quiet and lightly populated where I live so just hearing other stations pop up would be a sign to listen around and operate.

Now I don't mind looking like a fool if this is possible already, and I am missing it in the manual.
 I think it would be a great sales feature for those of us who don't
want to use CAT or a computer. Hans makes the firmware and actually I think this would not
be to difficult to add to Other. Hans if your listening, what am I missing here?

Re: Problem with my QCX 20 meter kit

Bernard A. Poskus
 

Alan:

Thanks for your reply.  I am actually getting an oscilloscope for Christmas, so I will be able to Troubleshoot shortly (I had already downloaded Hans' article).

I did want to say that the reason I thought these 8 readings were anomalous is that all the other measurements at all the other test points really were close to what the manual says is expected.  Thus, using a Fluke meter vs. using the internal meter didn't make much of a difference at those points at all.

It does seem that the readings I got at those 8 points weren't completely out of the realm of possibility, but they were certainly different from all the others.

73 de Bernie, KF0QS

Re: QCX 40m Version 4 new build problem

Alan G4ZFQ
 

No joy.
Wes

So IC10 pin 1 is still at 13V? What voltage on pins 2 and 3 measured at the IC pins?
(You have not confirmed that you are NOT using the internal voltmeter.)

73 Alan G4ZFQ

Re: QCX 40m Version 4 new build problem

Ronald Taylor
 

I think it’s my bad. I was looking at an older manual where R21 was 7.5K. You are correct. I don’t know about the swapping of R19 and R25. The version 1.08 shows R19 as 1K and R25 as 3.3K. Version 1.14 shows the same. And it’s the same all the way back to version 1.10

Ron

On Tue, Dec 17, 2019 at 11:26 Wesley Matthews <wesleymatthews@...> wrote:
Ron,

R35 shows and reads 750k using an external DVM. R21 in my manual indicates 10K ohms? Is there an update I missed?

I think I swapped R19 and R25 as indicated in update 1.08. Maybe I messed that up?

Thanks for the help.

Wes
--
72/73

Wes
WM7WM

Re: QCX 40m Version 4 new build problem

Wesley Matthews
 

Alan,

No joy.

Thx.

Wes
WM7WM
--
72/73

Wes
WM7WM

Re: QCX 40m Version 4 new build problem

Wesley Matthews
 

Ron,

R35 shows and reads 750k using an external DVM. R21 in my manual indicates 10K ohms? Is there an update I missed?

I think I swapped R19 and R25 as indicated in update 1.08. Maybe I messed that up?

Thanks for the help.

Wes
--
72/73

Wes
WM7WM

QLG1 5v power, 3.3v logic mod #gps

Eric KE6US
 

I wanted to be able to power my QLS1 from 5v, but limit logic levels to 3.3v for Raspberry Pi without external level shifting. Turns out to be remarkably simple. I removed C1, then cut the trace between C1 and L1. That leaves the 5v line to the LM317 intact so you still have 3.3v to the GPS chipset. All that remains is a simple jumper from the old C1 hole that connects to IC1, pin 14 to pickup 3.3v for the logic. One end goes in that hole, the other up to the junction of R7/C2. I did it on the bottom of the board. I installed a new C1 from its original ground hole to the end of L1. I nearly always crush a component for removal rather than trying to save a 10 cent part and risk damage to an irreplaceable PCB.

5v in, 3.3v logic out.

The mod is easily reversed if the requirements change and you want 5v in/out or 3.3v in/out instead.

My board is slightly more modified than that. Originally, I built it as 3.3v-only according to the mod in the instructions. When I decided I wanted to power it from 5v, I had already misplaced the LM317 that came with the kit. I substituted an LM4931Z33 that I had on hand which made R6 and R7 superfluous. That gave me an empty hole for the jumper. Incidentally, the pinout of the 4931 is different than an LM317.


QCX CW 40 meters

John Sharman
 

Hi I have just completed the above and have a couple of questions
a) I cannot see the S meter on the display (it is switched on in the menu)
b) when i increase the gain so that the decoder works I can hear very bad distortion

is this normal ??

Many Thanks

John G4TKO

Re: HF Coupon for case

Chris Hoffman
 

Home Depot has a very similar case for $24. 
Looks just like a Pelican case but much cheaper. 

Re: [GCBG] HF Coupon for case

jjpurdum
 

Yeah, I didn't notice the fine print as I was buying a gift for my son. Sorry about that.

Jack, W8TEE

On Tuesday, December 17, 2019, 9:46:59 AM EST, <kd8vrx@...> wrote:


$5 is a steal but the fine prints says "only available with qualifying $49.99 minimum purchase".  Most of us can find a way to spend that much, there's always something you can use/need.  I have a few of these cases and they are very good, the MFJ Analyser will also fit in one of those, which is perfect for field day.

Jocelyn
KD8VRX

Anyone able to get the Westminster Alarm Chimes to work in C1.03b? #clock

Jim Sheldon
 

For some reason I can't seem to get the Westminster Chimes to play with the Alarms in the C1.03b firmware.  I've tried 3 different chips and none of them want to output any sound from pin 15 (through a 47uF capacitor) to a small speaker.  I even tried watching pin 15 with a scope and don't see any activity at alarm time.  The Bell symbol is displayed indicating it's enabled in the alarm programming menu and also on the screen when the alarm is on.

Trying to set up a Christmas gift Clock for one of my family members and having the chimes would be nice.

Jim, W0EB

Re: New Tower

jjpurdum
 

I do like my gin and tonic better! The good news: Since I started drinking G&T's, I've not had malaria once!

Jack, W8TEE

On Tuesday, December 17, 2019, 9:08:01 AM EST, John Payne <payne0j@...> wrote:


Wow!  Maybe you had a few too many ice cold 807s while putting it up?

73 de John W4CWZ




New Tower

John Payne
 

Wow!  Maybe you had a few too many ice cold 807s while putting it up?

73 de John W4CWZ

HF Coupon for case

jjpurdum
 

All:

Harbor Freight has this coupon:

Inline image

for the small Apache case. It's regular price is $15 and often on sale for $10, but $5 is the cheapest I've seen it. I put Diz's 5 W in one:

Inline image

and it worked out well. I put all the connectors on the top panel so it remains watertight and still has room for paddles, earbuds, and antenna.

Jack, W8TEE

New tower

jjpurdum
 

...and my kids didn't think I could put it up myself!

Inline image

Re: New kit: 50W PA for QCX

Michael.2E0IHW
 

On 17/12/2019 11:28, SkipF, NT1G wrote:

... and a Century22 (still)
Yep, still one of the best!

Michael 2E0IHW

Re: New kit: 50W PA for QCX

SkipF, NT1G <skip.flem@...>
 

Thanks! It's now time for me to wind my 'smart watches';
 pair of seiko 4R36s. No battery included.
Skip, NT1G
 and a Century22 (still)

Re: BATTERY FOR 50 WATT AMP

Adam
 

It's really cheap to series and parallel your own 18650 battery packs with a control board...